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Impact of Different Salt-stressed Conditions on Growth, Mineral Nutrition and Fruiting of Bael (Aegle marmelos) Cultivars

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Title Impact of Different Salt-stressed Conditions on Growth, Mineral Nutrition and Fruiting of Bael (Aegle marmelos) Cultivars
 
Creator Anshuman Singh, Parbodh C Sharma, MD Meena and DK Sharma
 
Subject Aegle marmelos, Growth, Ionic relations, Salt-stress, Tolerance threshold
 
Description Bael (Aegle marmelos) cultivars (NB-5, NB-9, CB-1 and CB-2) grown in normal (ECe 1.3 dS m-1) and saline soils
(ECe 6.5 and 10.7 dS m-1) exhibited initial signs of salt injury as yellowing and scorching of leaves followed by
leaf necrosis, abscission and wilting of plants. After 24 months of exposure to 6.5 dS m-1 salinity, the minimum
(9.5%) and the maximum (58%) decreases in plant height were noted in NB-5 and CB-2 cultivars, respectively.
High salinity (10.7 dS m-1) severely suppressed growth in all the cultivars, and NB-9 and CB-2 plants did not
survive. Data on ion partitioning indicated restricted uptake of Na+ ions by NB-5 plants at moderate salinity. At
high salinity, however, Na+ accumulation significantly increased in leaves and stems indicating soil saturation
extract salinity (ECe) tolerance threshold limit of 6.0-7.0 dS m-1 in this cultivar. All the tested cultivars except
CB-2 produced fruits in moderately saline soils with average number of fruits per plant being 2 in NB-5 and
0.67 in each NB-9 and CB-1 cultivars. However, fruit yield contributing traits like fruit length, breadth and
weight significantly declined in salinized plants regardless of the cultivar. Salt stressed NB-5 plants not only
prevented the accumulation of Na+ to toxic levels but also exhibited higher K+ concentrations in different parts
resulting in better growth in saline soils.
ICAR
 
Date 2018-09-13T06:07:24Z
2018-09-13T06:07:24Z
2018
 
Type Research Paper
 
Identifier Singh, A., Sharma, P. C., Meena, M. D. and Sharma, D. K. 2018. Impact of Different Salt-stressed Conditions on Growth, Mineral Nutrition and Fruiting of Bael (Aegle marmelos) Cultivars. Journal of Soil Salinity and Water Quality 10(1), 80-86.
http://krishi.icar.gov.in/jspui/handle/123456789/6743
 
Language English
 
Publisher ISSSWQ